08/14/1907 Pollen, Stephen Hungerford to Edison, Thomas Alva
Ore milling and separation
[CJ421]  Company Records Series -- Edison Ore Milling Syndicate, Ltd., and Related Companies -- Dunderland Iron Ore Company, Ltd., Files: Correspondence (1907)
[CJ421AAI; TAEM 200:501]
Courtesy of Thomas Edison National Historical Park.
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